AS38345Internet Domain Name System Beijing Engineering Resrarch Center Ltd.
ChinaRegistryAPNICAs of 11th November 2026, AS38345 (Internet Domain Name System Beijing…), a network registered in China with APNIC, originates 24 IPv4 prefixes covering 6.1k addresses and 14 IPv6 prefixes. By IPv4 address space that makes it the 14,159th-largest of the 80,747 networks we see originating IPv4, and the 288th-largest of 617 in China. It is seen behind 7 upstream networks, most often AS7497 (Computer Network Information Center of…) and AS174 (Cogent Communications, LLC), and in front of 1 downstream network. 87% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. 95% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS38345 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS38345 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
23
adjacent networks
- Upstreams
- 730%
- Peers
- 1565%
- Downstreams
- 14%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS7497Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) | CN | Peer | 1,329 | 138 |
| AS174Cogent Communications, LLC |  US | Peer | 735 | 132 |
| AS4641The Hong Kong Internet Exchange Limited |  HK | Peer | 450 | 122 |
| AS4635HKIX Route Servers | HK | Peer | 92 | 13 |
| AS24482SG.GS |  SG | Peer | 8 | 1 |
| AS132337Axclusive | SG | Adjacent | 8 | 1 |
| AS49544i3D.net B.V |  NL | Peer | 8 | 1 |
Prefixes
All 38The largest blocks AS38345 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 1.8.1.0/24 | 256 | 76/76 |
| 1.8.8.0/24 | 256 | 76/76 |
| 150.242.156.0/24 | 256 | 76/76 |
| 150.242.157.0/24 | 256 | 76/76 |
| 202.173.8.0/24 | 256 | 76/76 |
| 202.173.9.0/24 | 256 | 76/76 |
| 202.173.10.0/24 | 256 | 76/76 |
| 202.173.11.0/24 | 256 | 76/76 |
| 202.173.14.0/24 | 256 | 76/76 |
| 202.173.15.0/24 | 256 | 76/76 |
Routing health
How AS38345's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.
RPKI origin validation
- Valid86.8%33
- Invalid5.3%2
- No ROA7.9%3
Propagation
- Globally propagated90% of full-feed peers or more94.7%36
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%5.3%2
Prefix sizes
IPv4 — 24 prefixes
IPv6 — 14 prefixes
- /4865.5k × /64100.0%14
Recent changes
Announcements that started or stopped since 12th Oct 2026.
No announcement by AS38345 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.